Effects of Eu3+ co-doping on the structural and optical properties of Ce3+ doped ZnO powder synthesized by chemical bath deposition method

Moipone A. Malimabe*, Setumo V. Motloung, Tshwafo E. Motaung, Lehlohonolo F. Koao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

In this study undoped, Ce3+-, Eu3+- doped and Ce3+: Eu3+ and co-doped ZnO nanopowders were synthesized by the chemical bath deposition (CBD) method. The samples were annealed at 700 °C for 2 h using an open furnace. The aim in this study was to investigate the energy transfer processes between Ce3+ and Eu3+ ions into ZnO powders. The X-Ray diffraction results indicated an increase in the crystallite sizes while scanning electron microscopy shown aggregation for the Ce3+: Eu3+ co-doped ZnO nanopowders. Ultraviolet–visible spectra exhibited red and blue shift in the Ce3+-, Eu3+ doped and Ce3+: Eu3+ co-doped ZnO nanopowders, respectively. The emission peaks at 582, 617, 659 and 705 nm are attributed to Eu3+ intra-4f transitions of 5D07F1 5D07F2 5D07F3 and 5D07F4 when excited by 465, 534 and 582 nm after co-doping. The chromaticity diagram show colour co-ordination in the orange vertex.

Original languageEnglish
Article number411890
JournalPhysica B: Condensed Matter
Volume579
DOIs
Publication statusPublished - 15 Feb 2020

Keywords

  • Aggregation
  • Band gap
  • CBD
  • Co-doped
  • Emission
  • Luminescence

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